The invention relates to a non-destructive and non-invasive method for determining the concentration or other parameters of constituent substances in fluids, which method is capable of minimizing the optical interfering influences, which are unknown but constant during the individual measurement, of the vessel wall on the measurement result or the evaluation, in that measurements are carried out with different through-radiation path lengths and quotient calculations eliminate the influences of the vessel wall. Wide-area illumination and detection ensure that non-linearities occurring during said measurements do not interfere with the accuracies of the determination.

A blood glucose meter (component measurement apparatus) includes a measurement chip, and an apparatus main body including an insertion hole. The measurement chip includes a pair of plate pieces, a spacer arranged between the pair of plate pieces, and a cavity that can retain blood. A pair of wall portions of the insertion hole, facing each other at a measurement unit and in the vicinity of the measurement unit, is separated from each other with a width smaller than a thickness of the measurement chip in a lamination direction. The spacer elastically deforms by a state in which the pair of plate pieces is pressed by the pair of wall portions and defines a width of the cavity.

To provide a reaction system capable of analyzing a liquid sample with high accuracy. To provide a reaction system A including: a reaction vessel 1, a flow channel 2 including a deformable unit 22 having an elastic member, a pump 3, a flow channel deformation mechanism 4, a measurement unit 5 and an analysis unit 6, wherein the measurement unit 5 includes a light source unit 52 and a light receiving unit 54, the flow channel deformation mechanism 4 includes an operation unit 42 for deforming the deformable unit 22 of the flow channel 2 such that a cross-sectional area of the deformable unit 22 is reduced, and the analysis unit 6 is electrically or physically connected to the measurement unit 5 and the flow channel deformation mechanism 4, and operates the flow channel deformation mechanism 4 based on a measurement result obtained by the measurement unit 5.

The disclosure provides an apparatus for high throughput analysis of samples and a method of making an assay card and performing an assay using the apparatus. The apparatus can include a transporter to position and advance a first plate of the QMAX card, a first dispenser to deposit a sample on the first plate, a second dispenser to dispense a reagent to contact the sample, a press to compress the sample between the first and second plates of the QMAX card into a uniformly thick layer, and an imager to image the uniformly thick layer.

A flow-through measuring cell having one inlet opening for entry of the fluid, and one outlet opening for exit of the fluid. A single measurement space is located between the inlet opening and outlet opening. A radiation measurement region is provided for measuring the interaction of the fluid in the measuring cell with electromagnetic radiation from outside the measuring cell. The radiation measurement region is bordered by two opposite windows of which one is intended for inlet and the other for exit of the electromagnetic radiation. The measuring cell has a positioning range with several operating positions with a different distance A, A between the windows into which the measuring cell can be set without rotation.

Distributed optical sensing systems utilize compressive sensing techniques to determine parameters sensed by a waveguide. The system generates light that is sent along a sensing waveguide, thereby producing backscattered light. A compressive sampling filter forms part of the system, and is used to selectively block portions of the generated light or the backscattered light. The backscattered light is received by a receiver and used to determine one or more parameters.

An analysis system features a confinement device, an optical measurement device, a flow device, a collecting conduit, and an actuation device. The confinement device comprises a measurement chamber, optically transparent first and second measurement surfaces that face each other across a distance that defines a thickness of the measurement chamber, and a flexible membrane that forms a seal with the measurement surfaces to laterally delimit the measurement chamber. When the collecting is sealed with a container, a connection is established that permits a liquid sample to be collected from the container. The optical measurement device emits light towards the chamber and detects light that has been transmitted through it, wherein the flow device causes liquid to flow through the collecting conduit between the container and the measurement chamber. The actuation device varies the thickness.

A flow-through measuring cell having one inlet opening for entry of the fluid, and one outlet opening for exit of the fluid. A single measurement space is located between the inlet opening and outlet opening. A radiation measurement region is provided for measuring the interaction of the fluid in the measuring cell with electromagnetic radiation from outside the measuring cell. The radiation measurement region is bordered by two opposite windows of which one is intended for inlet and the other for exit of the electromagnetic radiation. The measuring cell has a positioning range with several operating positions with a different distance A, A between the windows into which the measuring cell can be set without rotation.

A calibration suspension unit has a container made of a flexible material that is filled with a calibration suspension for the calibration of a turbidity meter. There exists no air supernatant above the calibration suspension in the container. Further, a method for the manufacture of a calibration suspension unit is provided and its use for the calibration of a turbidity meter is described.

A non-destructive measurement unit of gas concentration in sealed containers and an automatic filling and/or packaging line using such a unit are provided. The flexible containers are at least partially optically transparent, and the measurement unit comprises a light source for emitting a light beam at a wavelength tunable with an absorption wavelength of a gas contained in the sealed flexible container. The light source directs the light beam toward at least one inspection area, and a detector detects at least a portion of the beam after the beam passes through the inspection area and outputs data representative of an absorption spectrum of the gas. Means for generating a head space of predefined width into the sealed flexible container is adapted to advance the sealed flexible container by an advancement path which crosses the inspection zone and to maintain the predefined width of the head space during the advancement.